IN1IN2
D1D2
S1S2
V– V+
GND NC
S4S3
D4D3
IN4IN3
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
Top View
DG201B
Dual-In-Line, SOIC and TSSOP
DG201B/202B
Vishay Siliconix
Document Number: 70037
S-52433—Rev. G, 06-Sep-99 www.vishay.com FaxBack 408-970-5600
4-1
Improved Quad CMOS Analog Switches
22-V Supply Voltage Rating
TTL and CMOS Compatible Logic
Low On-Resistance—rDS(on): 45
Low Leakage—ID(on): 20 pA
Single Supply Operation Possible
Extended Temperature Range
Fast Switching—tON: 120 ns
Low Glitching—Q: 1 pC
Wide Analog Signal Range
Simple Logic Interface
Higher Accuracy
Minimum T ransients
Reduced Power Consumption
Superior to DG201A/202
Space Savings (TSSOP)
Industrial Instrumentation
Test Equipment
Communications Systems
Disk Drives
Computer Peripherals
Portable Instruments
Sample-and-Hold Circuits
The DG201B/202B analog switches are highly improved
versions of the industry-standard DG201A/202. These
devices are fabricated in Vishay Siliconix’ proprietary silicon
gate CMOS process, resulting in lower on-resistance, lower
leakage, higher speed, and lower power consumption.
These quad single-pole single-throw switches are designed
for a wide variety of applications in telecommunications,
instrumentation, process control, computer peripherals, etc.
An improved charge injection compensation design minimizes
switching transients. The DG201B and DG202B can handle
up to 22-V input signals, and have an improved continuous
current rating of 30 mA. An epitaxial layer prevents latchup.
All devices feature true bi-directional performance in the on
condition, and will block signals to the supply voltages in the
off condition.
The DG201B is a normally closed switch and the DG202B is
a normally open switch. (See Truth Table.)
Logic DG201B DG202B
0 ON OFF
1 OFF ON
Logic “0” 0.8 V
Logic “1” 2.4 V